细菌性痢疾的传播途径是()
A.虫媒传播
B.消化道
C.呼吸道
D.血液
E.接触传播
参考答案:B
把下列句子排列成完整的对话,将序号写在横线上。
A. Do you like football?
B. Yes, I do.
C. Good afternoon, Jim.
D. Fine. What's that in your bag?
E. That's a good idea. Let's go!
F. It's a football.
G. Let's go and play football.
H. Good afternoon. How are you today?
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卫生监督行为的效力包括()
A.确定力
B.拘束力
C.不可变更力
D.自执行力
E.强制执行力